<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style>
</style>
<script>
</script>
</head>

<body>
  <div class="tab" id="tab">
      <section class="btnBox">
          <input class="active" type="button" value="按钮1" />
            <input type="button" value="按钮2" />
            <input type="button" value="按钮3" />
        </section>
        <ul>
          <li class="show">1</li>
            <li>2</li>
            <li>3</li>
        </ul>
    </div>
    
    <div class="tab" id="tab2">
      <section class="btnBox">
          <input class="active" type="button" value="按钮1" />
            <input type="button" value="按钮2" />
            <input type="button" value="按钮3" />
        </section>
        <ul>
          <li class="show">1</li>
            <li>2</li>
            <li>3</li>
        </ul>
    </div>
    <div class="tab2" id="tab3">
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
    </ul>
    <input type="button" value="左" class="btn1">
    <input type="button" value="右" class="btn2">
</div>
</body>
</html>
<script type="text/javascript" src="bundle.js"></script>